Bottom-Irradiation Multi-Sample Reaction Device for Photocatalysis
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Solution Overview
Problem
Existing light irradiation parallel reaction devices face issues with inconsistent irradiation intensity, low light incidence rates, difficulty in online sampling, and poor flexibility due to lateral light incidence and lack of automatic operation, leading to inefficient and resource-intensive comparative experiments in photocatalysis and photochemical reactions.
Innovation Solution
A light irradiation multi-sample parallel reaction device featuring a base, support disc, rotating disc, and reaction flasks with light transmission holes, where light sources are arranged on the rotating disc to irradiate reaction flasks from the bottom, and magnetic stirrers are used for stirring, with a controller managing light intensity and operation, ensuring consistent irradiation and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lateral light irradiation is used with reaction flasks arranged annularly, then parallel comparative experiments can be conducted, but irradiation intensity consistency deteriorates due to variations in flask wall roundness and machining precision
Solution Approach 1:
The patent inverts the conventional lateral irradiation approach by implementing bottom irradiation, where light sources are positioned below the reaction flasks and light transmissive plates. This inversion eliminates the dependency on flask wall roundness and machining precision for achieving consistent irradiation, as the light passes through the flat bottom plate instead of the curved flask walls.
Solution Approach 2:
The patent introduces light transmissive plates as intermediary components between the light sources and reaction flasks. These plates serve as mediators that ensure uniform light distribution regardless of flask manufacturing variations, thereby maintaining consistent irradiation intensity across all parallel experiments.
2Productivity
If lateral light incidence is used, then reaction flasks can be arranged in parallel, but light use ratio deteriorates due to high reflectivity of cylindrical surfaces and light loss at gaps between flasks
Solution Approach 1:
The patent inverts the light incidence direction from lateral to bottom irradiation. This eliminates the high reflectivity losses associated with cylindrical flask surfaces and ensures that light directly enters the reaction solutions through the bottom light transmissive plates, significantly improving the light use ratio.
Solution Approach 2:
The patent converts the previously harmful effect of light reflection off cylindrical surfaces into a beneficial configuration by using flat bottom light transmissive plates. The flat surfaces minimize reflection losses and maximize light absorption by the reaction solutions, transforming an energy loss problem into an energy efficiency solution.
3Illumination intensity
If test tubes rotate around the light source, then irradiation can be distributed, but online sampling detection becomes difficult and full-automatic operation cannot be achieved
Solution Approach 1:
The patent inverts the dynamic configuration by using stationary reaction flasks with bottom irradiation. This stationary arrangement allows for easy integration of online sampling detection systems and automatic operation, as the flasks remain in fixed positions throughout the experiment without rotation.
4Adaptability or versatility
If light filters need to be changed for different experimental wavelengths, then wavelength specificity can be achieved, but luminous flux decreases greatly
Solution Approach 1:
The patent introduces adjustable light sources with variable wavelength capabilities. Instead of using static light filters that must be physically changed, the system dynamically adjusts the wavelength of light sources, maintaining high luminous flux while achieving wavelength specificity for different experimental requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves consistent irradiation intensity, improved accuracy, reduced resource waste, and enables automatic and flexible operation, enhancing the efficiency and reliability of comparative experiments in photocatalysis and photochemical reactions.
Implementation Method 1
A plurality of light transmission holes are formed in the support disc. The plurality of reaction flasks are placed on the light transmission holes in a one-to-one correspondence
Implementation Method 2
The stirrers are magnetic stirrers, and each magnetic stirrer comprises a magnetic shield rotatably mounted on a lower surface of the top disc and hollowly sleeving the respective reaction flask, a magnetic stir bar placed in the respective reaction flask, a power magnet fixed to the magnetic shield
Data Source
AI summary
A light irradiation multi-sample parallel reaction device comprises: a base (1), a support disc (2) horizontally fixed and mounted above the base (1), a top disc (3) mounted above the support disc (2), a rotating disc (4) rotatably mounted below the support disc (2), and a plurality of reaction flasks (5), wherein a plurality of light transmission holes are circumferentially formed in the support disc (2); the plurality of reaction flasks (5) are placed on the light transmission holes in a one-to-one correspondence; a plurality of reaction flask through-holes for the reaction flasks (5) to pass through are formed in the top disc (3); a plurality of sets of stirrers (7) corresponding to the reaction flasks (5) are mounted between the top disc (3) and the support disc (2), and used for stirring liquids in the reaction flasks (5); the rotating disc (4) is arranged coaxially with the support disc (2); and a plurality of light sources (9) are arranged on an upper surface of the rotating disc (4). The device enables the irradiation intensity of light entering solutions to be consistent, improving experimental accuracy.